Hong Kong has overtaken Switzerland as the world's largest centre for cross-border private wealth, marking one of the biggest shifts in global wealth management for decades. According to Boston Consulting Group's latest Global Wealth Report, around US$4.8 trillion is expected to flow into the world's five leading international financial centres over the next five years, with both Hong Kong and Singapore expected to benefit from continued wealth creation across Asia and growing demand for geographic diversification.

For many investors, the decision to hold assets in Singapore or Hong Kong is no longer driven solely by tax planning. Wealthy individuals and families are increasingly diversifying where they bank, the currencies they hold, and the jurisdictions in which their investments are managed. Political uncertainty, changing regulation and access to global investment opportunities are all influencing where wealth is booked.

While this may appear to be a private banking story, it has important consequences for the UK property market. At Willow Private Finance, we are seeing a growing number of borrowers whose wealth is held internationally but whose property ambitions remain firmly focused on Britain.

Wealth Is Becoming More International Than Property

One of the most significant changes in recent years is that wealth and property are no longer necessarily located in the same country.

A client may live in Singapore while purchasing an investment property in Manchester. Another may hold an investment portfolio through a Hong Kong private bank while refinancing a London townhouse. Parents based overseas continue to purchase homes for children studying at UK universities, while British expatriates often retain rental portfolios long after relocating abroad.

These arrangements are becoming increasingly common, yet many mortgage lenders still assess applications using underwriting models designed primarily for domestic borrowers.

Traditional lending works best where income is earned in sterling, assets are held with UK banks and applicants have an established UK credit profile. International clients rarely fit that mould. Instead, they may receive income in Singapore dollars or US dollars, own businesses across several countries, hold substantial investment portfolios overseas and maintain relationships with multiple international banks.

None of this necessarily makes them higher-risk borrowers. In many cases, the opposite is true. The challenge is that conventional underwriting systems often struggle to assess complex international financial profiles.

Why Specialist Lending Matters More Than Ever

Where mainstream lenders can see complexity, specialist lenders often see opportunity.

A borrower with significant investments held in Singapore may have considerable financial strength, but demonstrating that strength requires a lender willing to look beyond automated affordability models. The same applies to clients with overseas company structures, foreign currency earnings or assets managed through family offices.

Preparing these applications properly has become increasingly important. Source-of-wealth evidence, overseas income verification and foreign currency treatment all require careful presentation before an underwriter reviews the case. When that work is done correctly, many transactions that initially appear difficult become entirely achievable.

This is one of the reasons specialist brokers continue to play an increasingly important role in international property finance. Success often depends less on finding the cheapest headline interest rate and more on matching the client with a lender whose underwriting philosophy reflects the reality of modern international wealth.

Our Own Data Reflects The Global Trend

The shift identified by Boston Consulting Group is also beginning to show in Willow Private Finance's own analytics.

Over the past six months, we have seen website traffic from Singapore increase by 782%, while visits from Hong Kong have risen by 133%.

Although website traffic is only one indicator, it mirrors the growing number of enquiries we are receiving from internationally mobile clients.

Many have substantial assets overseas, receive foreign currency income or operate businesses across multiple jurisdictions, yet continue to see UK property as an attractive long-term investment.

That growing interest reflects Britain's continued appeal to overseas investors. Despite changes in taxation and regulation over recent years, the UK remains one of the world's most transparent property markets, supported by strong legal protections and deep mortgage liquidity.

Family Offices Are Continuing To Look At UK Property

Another important trend underpinning this shift is the continued growth of family offices throughout Asia.

Singapore has become one of the world's fastest-growing centres for private wealth management, attracting family offices seeking political stability, sophisticated financial services and access to international markets. Hong Kong continues to play a similar role for many wealthy families across Greater China and the wider Asia-Pacific region.

Many of these families continue to allocate capital internationally, with UK residential property remaining an important component of long-term wealth preservation strategies. Whether purchasing prime London homes, investment properties or accommodation for family members studying in Britain, financing requirements have become increasingly sophisticated.

The result is growing demand for lenders capable of understanding cross-border wealth structures rather than simply domestic income.

Looking Beyond Where Wealth Is Held

The BCG report highlights a much broader structural shift than simply the rise of two financial centres. Wealth is becoming increasingly international, with affluent families deliberately spreading assets across multiple jurisdictions to improve resilience, diversify currency exposure and broaden investment opportunities.

For mortgage borrowers, that means the location of wealth is becoming less important than how that wealth can be evidenced to a lender.

As international wealth continues to evolve, UK property finance will need to evolve with it. Borrowers whose assets are held in Singapore or Hong Kong should not assume their mortgage options are limited simply because their financial affairs span multiple countries. With the right preparation and access to specialist lenders, complex international financial profiles can often be accommodated far more readily than many expect.



For advisers, lenders and borrowers alike, one thing is becoming increasingly clear: global wealth may be shifting east, but demand for UK property finance remains firmly international.